JPH0717340Y2 - Snow melting prevention structure at ski resort - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a snow melting prevention structure for reducing snow melting due to geothermal heat at a ski resort.

[Problems to be solved by conventional techniques and devices] Ski resorts include natural ski resorts that use natural snowfall and so-called artificial ski resorts where artificial snow is used to spray artificial snow on the slopes. At any of the ski resorts, the heat of the ground makes it easy for the accumulated snow to melt. The extent of snow melting due to this geothermal heat is large, and it is estimated that it will be more than double that of snow melting due to solar heat and outside temperature. Even in regions with relatively high geothermal power and regions with low geothermal power, the amount of snowmelt due to this geothermal heat is particularly large in early winter and early spring. As a result, it is difficult to secure snowfall suitable for skiing, and in artificial ski resorts, it is necessary to frequently spray supplemental artificial snow, which increases maintenance costs. In addition, it is necessary to shorten the business period of ski resorts that try to avoid such problems.

Therefore, it becomes necessary to cut off the geothermal heat and reduce the amount of snowmelt. Therefore, it is conceivable to lay, for example, a tatami mat or a muscillo as a heat insulating material between the ground and the snow. But,
In this case, so-called snowmelt water generated by melting snow is absorbed by the tatami mat and the muscillo. Since water easily transfers heat, this water reduces the heat insulation effect of tatami mats and muscillo, transfers geothermal heat upward, and melts snow.

Further, these tatami mats and muscillo are easily corroded by long-term use.

Furthermore, since the tatami mat is large in size and lacks flexibility, when the tatami mat is laid on a ski resort with a lot of ups and downs, the tatami mat is easily moved when an external impact is applied thereto. Also, since Mushiro is light, it has the same problem.

[Means for Solving the Problems] In the present invention, the following means were taken in order to solve the various problems described above. That is, according to the present invention, a large number of plate bodies made of synthetic resin foam are laid on the ground in both vertical and horizontal directions with a required gap between them, and two upper and lower synthetic resin plates are placed on the plate body. The sheet-like drainage material is laid so that a space between them is held, and a number of through holes are provided in the upper sheet. A cut is provided at a position corresponding to the gap to connect the space and the gap, and a sand layer is further arranged on the sheet-shaped drainage material.

Further, a drainage material having the same structure as the sheet-shaped drainage material can be inserted into the gap.

[Operation] It is known that synthetic resin foams have excellent heat insulating properties. By laying a plate made of synthetic resin foam on the ground, the conduction of geothermal heat to the snow is blocked.

In addition, the generated snowmelt water penetrates into the sand layer and enters the space between the upper and lower sheets through the through holes provided in the upper sheet of the sheet-shaped drainage material, and the space between the adjacent foam bodies communicating with this space. It flows downward through the gap and is quickly eliminated into the ground. The snow-melting water reduces the heat insulating effect of the plate body and transmits the geothermal heat upward. However, since the snow-melting water is promptly removed as described above, there is no fear that the heat insulating effect of the plate body is reduced.

Furthermore, since both the plate and the sheet-shaped drainage material are made of synthetic resin, they have excellent corrosion resistance and can be used semipermanently.

Further, since the sand layer is provided on the sheet-shaped drainage material, the plate body and the sheet-shaped drainage material are not damaged by the tip of the stock. Further, if a plate made of a synthetic resin foam is exposed to solar heat for a long time in summer and becomes high in temperature, it may rarely spontaneously ignite. However, by providing a layer of sand on the plate, it is possible to completely prevent this spontaneous combustion.

Also, if a drainage material having the same structure as the above-mentioned sheet-shaped drainage material is inserted into the gap, this drainage material acts as a spacer, and the gap is closed even if the plate body receives an impact from the outside. There is no. Therefore, continuous exclusion of snowmelt water is ensured.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, G is the ground of the slope in the ski area. The snow melting prevention structure of the present invention is a plate body 10 made of polystyrene foam or vinyl chloride resin foam.
Are laid in both vertical and horizontal directions, a sheet-shaped drainage material 14 is laid on the plate body 10, and further layered sand 20 is arranged thereon. The sheet-shaped drainage material 14 has the same vertical and horizontal dimensions as the plate body 10, and is fixed on the plate body 10 with an adhesive or the like. M is a synthetic resin sliding mat whose upper surface is formed as a ski sliding surface,
S is snow.

As the plate body 10, for example, one having a length of 50 cm, a width of 50 cm, and a thickness of 10 cm is used. When the plate bodies 10 are spread on the ground G, a gap 11 of about 1 cm is provided between the plate bodies 10 adjacent to each other.

As shown clearly in FIG. 3, the sheet-shaped drainage material 14 is composed of two upper and lower sheets 15 and 17 both made of synthetic resin. The upper sheet 15 has a large number of through holes. Further, the lower sheet 17 has frustoconical bulges 16 at predetermined intervals. Both of these sheets 15 and 17 are manufactured by elongating each other, and are fused together and then cut to an appropriate length for use. In the sheet-shaped drainage material 14 thus formed, a space 18 is formed between the upper and lower sheets 15 and 17.

The sheet drainage material 14 is fixed on the plate body 10 as described above, and the same material as the sheet drainage material 14 is cut into a strip shape and inserted into the gap 11.

In addition, sand 20 is sprinkled on the sheet-shaped drainage material 14, and the thickness 5
Form a layer of 20 cm of sand ~ 10 cm. In order to prevent the sand 20 from flowing into the gap 11, the gap between the two adjacent sheet-shaped drainage materials 14 and the other adjacent sheet-shaped drainage materials 14, 14 is covered from above with a cloth adhesive tape or the like. It is preferable to keep. Further, a non-woven fabric may be laid over a large number of sheet-shaped drainage materials 14.

Although not shown in detail, the sliding mat M is composed of a large number of synthetic resin mat structures m. This structure m has a square shape of 10 cm on each side,
The thickness is 2-3 cm. Further, a thin rod (not shown) having a length of 2 to 3 cm is projected on the upper surface of the structure m to give elasticity. This structure m has a connecting portion at the outer edge of each corner. By this connecting portion, a large number of mat constituents m are sequentially connected in the vertical and horizontal directions to form the sliding mat M. The shape of the mat structure m that constitutes the sliding mat M is not limited to the above-mentioned square shape, but may be circular, for example.

The plate body 10 laid on the ground G blocks the ground heat from being conducted to the snow S and prevents the snow S from melting.

Further, the snowmelt water penetrates into the layer of sand 20, passes through the upper sheet 15 of the sheet-shaped drainage material 14, and enters the space 18 between the upper and lower sheets 15 and 17. Then, the sheet-shaped drainage material 14 inserted into the gap 11
It quickly penetrates the ground through the space 18 inside. As a result, the snowmelt water does not reduce the heat insulating effect of the plate body 10 and there is no possibility of transmitting the geothermal heat upward.

Since both the plate 10 and the sheet drainage material 14 are made of synthetic resin, they have excellent corrosion resistance and can be used semipermanently.

Since there is layered sand 20, there is a plate due to the tip of the stock.
10 and the sheet drainage material 14 are not damaged.

Since the layer of sand 20 is provided on the plate body 10, the plate body 10 is stable without floating. Therefore, the plate body 10 does not easily move due to an external impact.

Since the one having the same structure as the sheet-shaped drainage material 14 is inserted into the gap 11, the gap 11 between the plate bodies 10 is maintained, the gap 11 is not closed by the movement of the plate bodies 10, and the continuous melting of the snowmelt water is performed. Elimination is secured.

It should be noted that some cement may be mixed with the sand 20 to prevent the sand 20 from flowing.

[Effect of the Invention] The plate body made of synthetic resin foam laid on the ground blocks the conduction of ground heat to the snow. Thereby, snow melting due to geothermal heat can be prevented.

Further, the snowmelt water quickly penetrates into the ground through a sheet-shaped drainage material or the like. As a result, the snow melting water does not reduce the heat insulating material of the plate body.

By forming the sand layer on the sheet-shaped drainage material, the plate body is not damaged by the stock. Further, the synthetic resin foam may rarely ignite spontaneously in summer. However, a layer of sand can prevent this.

Since both the plate and the drainage material are made of synthetic resin, they have excellent corrosion resistance and can be used semipermanently.

The sand 20 on the plate body 10 stabilizes the plate body 10 without floating, and the plate body 10 does not easily move due to an external impact.

Further, as described in claim 2, by inserting the sheet-like drainage material having the same structure into the gap between the adjacent synthetic resin foams, it is possible to more effectively remove the snowmelt water. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of an essential part, and FIG. 3 is a perspective view of a sheet-shaped drainage material fixed on a plate body. [Explanation of symbols] G: ground, 10 ... plate, 11 ... gap, 14 ... sheet drainage material, 15, 17 ... sheet, 16 ... bulge, 18 ... space, 20 ... …sand.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyoji Shinohara 2-6-3 Otemachi, Chiyoda-ku, Tokyo Inside Nippon Steel Corporation (72) Inventor Motoaki Miyazaki 4-chome, Megurohonmachi, Meguro-ku, Tokyo No. 7 (72) Inventor Hiroyasu Ogata 2-6-1, Namiki, Kanazawa-ku, Yokohama-shi, Kanagawa 402 (72) Inventor Yoshikatsu Tani 2-16-8 Yuyamadai, Kawanishi-shi, Hyogo (56) References Special Kai 61-162604 (JP, A) JP 4-44781 (JP, A) JP 4-97003 (JP, A) JP 2-240304 (JP, A) Actual Kai 4-22503 ( JP, U) Actual Kaihei 2-136105 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A large number of plate bodies made of synthetic resin foam are laid in a vertical and horizontal direction on the ground with a required gap between them, and two upper and lower synthetic resin plates are placed on the plate body. The sheet-like drainage material is laid by holding the sheets so as to hold a space between them, and the upper sheet is provided with a large number of through holes, and the gap between the plate bodies in the sheet below the sheet-like drainage material is laid. A structure for preventing snow melting at a ski resort, characterized in that a cut is provided at a position corresponding to the above to connect the space and the gap, and a layer of sand is arranged on the sheet-shaped drainage material. 2. The snow melting prevention structure for a ski resort according to claim 1, wherein a drainage material having the same structure as the sheet-shaped drainage material is inserted into the gap.